TOTO CS232B-SH233BA

TOTO Purest QR Combination Toilet System Instruction Manual

Model: CS232B (Bowl) & SH233BA (Tank)

1. Introduction

This manual provides essential information for the safe and efficient installation, operation, and maintenance of your TOTO Purest QR combination toilet system. This system includes the CS232B toilet bowl and the SH233BA toilet tank. Please read this manual thoroughly before installation and use, and keep it for future reference.

The TOTO Purest QR system is designed for general floor drain installations with a 200mm rough-in and features an integrated hand wash basin. It incorporates TOTO's advanced technologies for hygiene and water efficiency.

2. Safety Information

Important Safety Instructions:

  • Always turn off the main water supply before attempting any installation or maintenance.
  • Wear appropriate personal protective equipment (PPE) such as gloves and eye protection during installation.
  • Ensure all connections are secure and watertight to prevent leaks.
  • Do not use harsh abrasive cleaners on ceramic surfaces, as this may damage the finish.
  • If you are unsure about any part of the installation or repair process, consult a qualified plumber.
  • Keep small parts out of reach of children to prevent choking hazards.

3. Setup and Installation

Installation of the TOTO Purest QR combination toilet system requires basic plumbing knowledge. Professional installation is recommended to ensure proper function and to avoid potential damage.

3.1 Pre-Installation Checks

  • Verify that your bathroom's floor drain rough-in is 200mm.
  • Ensure all necessary components are present: CS232B toilet bowl, SH233BA toilet tank, stopcock, and mounting hardware. (Note: Toilet seat is sold separately).
  • Turn off the water supply to the installation area.

3.2 Drain Pipe Preparation

The system uses a slip-in connection for the drain pipe. The drain socket is compatible with 75mm and 100mm VU/VP pipes. The drain pipe should be cut 60mm above the finished floor level for proper connection.

3.3 Bowl and Tank Assembly

  1. Position the toilet bowl (CS232B) over the floor drain, ensuring proper alignment with the mounting bolts.
  2. Secure the bowl to the floor using the provided hardware. Do not overtighten.
  3. Attach the toilet tank (SH233BA) to the bowl, following the manufacturer's instructions for sealing and bolt tightening.
  4. Connect the water supply line to the stopcock and then to the tank's fill valve. Ensure all connections are hand-tightened, then use a wrench for a final quarter-turn to prevent leaks.
  5. Slowly turn on the water supply and check for any leaks.

For detailed diagrams and specific torque requirements, refer to the separate installation guide provided with the product packaging.

4. Operating Instructions

The TOTO Purest QR toilet system operates with a standard flush mechanism, designed for efficient water usage.

4.1 Flushing the Toilet

  • To flush, press the flush lever or button located on the toilet tank.
  • The Tornado Flush system will powerfully and efficiently clean the entire bowl with a 4.8L water volume.
  • Allow the tank to refill completely after each flush.

4.2 Using the Hand Wash Basin

The integrated hand wash basin on top of the tank is designed for convenient hand washing. Water used for hand washing flows into the tank, contributing to water conservation.

  • After flushing, water will flow into the hand wash basin.
  • Wash your hands in the basin. The water will then drain into the toilet tank for the next flush cycle.

5. Maintenance and Cleaning

Regular cleaning and maintenance will ensure the longevity and optimal performance of your TOTO Purest QR toilet.

5.1 Cleaning the Bowl and Exterior

  • The toilet features TOTO's Cefiontect ceramic surface, which is exceptionally smooth at a nanometer level. This makes it highly resistant to dirt and stains, and easy to clean.
  • The Rimless Design (フチなし形状) eliminates hidden areas under the rim, allowing for a quick and thorough wipe-down.
  • Use a soft cloth or sponge with a mild, non-abrasive bathroom cleaner.
  • Do not use abrasive powders, scouring pads, or cleaners containing strong acids or alkalis, as these can damage the Cefiontect finish.
  • For stubborn stains, a specialized ceramic cleaner designed for Cefiontect surfaces may be used, following the product's instructions.

5.2 Tank Maintenance

  • Periodically check the inside of the tank for mineral buildup or debris.
  • If necessary, turn off the water supply, flush the toilet to empty the tank, and clean the interior with a soft brush and mild cleaner.
  • Inspect the fill valve and flush valve for proper operation.

6. Troubleshooting

This section addresses common issues you might encounter with your TOTO Purest QR toilet system.

ProblemPossible CauseSolution
Toilet does not flush or flushes weakly.
  • Water supply valve is closed.
  • Tank water level is too low.
  • Flapper/flush valve is not opening fully.
  • Clog in the trapway or drain.
  • Open the water supply valve fully.
  • Adjust the fill valve to raise the water level.
  • Check and adjust the flapper chain or flush valve mechanism.
  • Use a plunger or toilet auger to clear the clog. If persistent, contact a plumber.
Toilet runs continuously or refills frequently.
  • Flapper/flush valve not sealing properly.
  • Fill valve is faulty or misaligned.
  • Water level is too high, overflowing into the overflow tube.
  • Inspect and clean the flapper/flush valve for debris or wear. Replace if necessary.
  • Adjust or replace the fill valve.
  • Adjust the fill valve to lower the water level.
Leaks around the base of the toilet.
  • Loose mounting bolts.
  • Damaged wax ring or floor seal.
  • Crack in the bowl or tank.
  • Tighten mounting bolts (do not overtighten).
  • Replace the wax ring/floor seal. This may require removing the toilet.
  • Contact a professional for inspection and repair/replacement.

If troubleshooting steps do not resolve the issue, please contact TOTO customer support or a qualified plumber.

7. Specifications

  • Model: CS232B (Toilet Bowl), SH233BA (Toilet Tank)
  • Brand: TOTO
  • Drain Type: Floor Drain
  • Rough-in: 200mm
  • Hand Wash: Integrated on tank
  • Flush Volume: 4.8 Liters (Water-saving)
  • Ceramic Technology: Cefiontect
  • Flush System: Tornado Flush
  • Bowl Design: Rimless (フチなし形状)
  • Drain Pipe Connection: Slip-in method, compatible with 75mm/100mm VU/VP pipes.
  • Color: #NW1 (White)
  • Material (Seat): Polypropylene (PP) (Note: Toilet seat is not included with this combination)
Image showing the TOTO #NW1 White color sample, a smooth white square.

Figure 1: TOTO #NW1 White color sample. This image displays a smooth, square white ceramic tile, representing the pristine white color of the toilet system. The text indicates it's a timeless and popular color reminiscent of fine porcelain.

8. Warranty Information

TOTO products are manufactured to high-quality standards. Specific warranty terms and conditions may vary by region and product. Please refer to the warranty card included with your product packaging or visit the official TOTO website for detailed warranty information applicable to your purchase.

Keep your proof of purchase for warranty claims.

9. Customer Support

For technical assistance, replacement parts, or further inquiries, please contact TOTO customer support.

  • TOTO Official Website: www.toto.com
  • Refer to your product packaging for regional contact information.

© 2026 TOTO Corporation. All rights reserved.

This manual is subject to change without notice.

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